Revolver for firing high velocity ammunition

Abstract

A revolver for firing high velocity ammunition includes a frame, a cylinder, a barrel, and a firing mechanism. The revolver may include one or more of the following, each of which is especially adapted for use in the context of firing high velocity ammunition: spacers for adjusting a barrel-cylinder gap, for eliminating broaching of the rearward surface(s) of the barrel; a forcing cone formed in the rearward opening of the barrel for accommodating deformed projectiles; a reflective surface (e.g., mirrored surface) provided on the cone and/or barrel rearward surfaces, for reducing erosion resulting from using high velocity ammunition; gain-twist rifling in the barrel for a smoother transition to full projectile velocity; a larger diameter, hardened firing pin bushing for minimizing brass flow in the rearward direction; and a front sight assembly that minimizes lateral shift or drift of the sight pin during firing.

1. A firearm for firing high velocity ammunition, the firearm comprising:
 a frame; 
 a barrel connected to the frame; 
 a cylinder pivotally attached to the frame and positioned within an opening in the frame and having at least one chamber operatively aligned with the barrel for housing a round of ammunition; and 
 a firing pin bushing connected to the frame, wherein the firing pin bushing has a front face facing the at least one chamber, said firing pin bushing including a generally cylindrical primary member defining the front face and having a firing pin aperture extending there through from the front face to a rearward face of the primary member, and a generally cylindrical seating member extending from the rearward face of the primary member and having a seating member aperture extending there through, said seating member aperture being concentrically positioned with respect to the firing pin aperture and having a diameter greater than a diameter of the firing pin aperture; 
 wherein the firing pin bushing is mounted in a recess in the frame complementary in shape to the firing pin bushing; and 
 wherein the recess includes a first vertical surface, a first land, a second vertical surface and a second land, and a chamfered rim defining an edge between the first land and the second vertical surface. 
 
     
     
       2. The firearm of  claim 1 , wherein:
 the primary member is disc shaped. 
 
     
     
       3. The firearm of  claim 1 , wherein:
 a perimeter of the front face is rounded. 
 
     
     
       4. The firearm of  claim 1 , wherein:
 a perimeter of the rearward face is chamfered to facilitate the insertion of the firing pin bushing in the recess. 
 
     
     
       5. The firearm of  claim 1 , wherein the firearm bushing further comprises:
 a transition surface between the rearward face and an outer wall of the seating member, said transition surface being concavely radiused. 
 
     
     
       6. The firearm of  claim 1 , wherein:
 the rearward-most edge of the seating member is chamfered to facilitate insertion of the firing pin bushing into the recess.